blob: 492391d414cec147564be9fa1a13aa106068aec6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/******************************************************************************
**
** FILE NAME : ifxmips_deu_danube.c
** PROJECT : IFX UEIP
** MODULES : DEU Module for Danube
**
** DATE : September 8, 2009
** AUTHOR : Mohammad Firdaus
** DESCRIPTION : Data Encryption Unit Driver
** COPYRIGHT : Copyright (c) 2009
** Infineon Technologies AG
** Am Campeon 1-12, 85579 Neubiberg, Germany
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** HISTORY
** $Date $Author $Comment
** 08,Sept 2009 Mohammad Firdaus Initial UEIP release
*******************************************************************************/
/*!
\defgroup IFX_DEU IFX_DEU_DRIVERS
\ingroup API
\brief deu driver module
*/
/*!
\file ifxmips_deu_danube.c
\ingroup IFX_DEU
\brief board specific deu driver file for danube
*/
/*!
\defgroup BOARD_SPECIFIC_FUNCTIONS IFX_BOARD_SPECIFIC_FUNCTIONS
\ingroup IFX_DEU
\brief board specific deu functions
*/
/* Project header files */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <asm/io.h> //dma_cache_inv
#include "ifxmips_deu_dma.h"
#include "ifxmips_deu_danube.h"
/* Function Declerations */
int aes_memory_allocate(int value);
int des_memory_allocate(int value);
void memory_release(u32 *addr);
int aes_chip_init (void);
void des_chip_init (void);
int deu_dma_init (void);
u32 endian_swap(u32 input);
u32* memory_alignment(const u8 *arg, u32 *buff_alloc, int in_out, int nbytes);
void dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
void chip_version(void);
void deu_dma_priv_init(void);
void __exit ifxdeu_fini_dma(void);
#define DES_3DES_START IFX_DES_CON
#define AES_START IFX_AES_CON
#define CLC_START IFX_DEU_CLK
/* Variables definition */
int ifx_danube_pre_1_4;
u8 *g_dma_page_ptr = NULL;
u8 *g_dma_block = NULL;
u8 *g_dma_block2 = NULL;
deu_drv_priv_t deu_dma_priv;
/*! \fn u32 endian_swap(u32 input)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief function is not used
* \param input Data input to be swapped
* \return input
*/
u32 endian_swap(u32 input)
{
return input;
}
/*! \fn u32 input_swap(u32 input)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief Swap the input data if the current chip is Danube version
* 1.4 and do nothing to the data if the current chip is
* Danube version 1.3
* \param input data that needs to be swapped
* \return input or swapped input
*/
u32 input_swap(u32 input)
{
if (!ifx_danube_pre_1_4) {
u8 *ptr = (u8 *)&input;
return ((ptr[3] << 24) | (ptr[2] << 16) | (ptr[1] << 8) | ptr[0]);
}
else
return input;
}
/*! \fn void aes_chip_init (void)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief initialize AES hardware
*/
int aes_chip_init (void)
{
volatile struct aes_t *aes = (struct aes_t *) AES_START;
//start crypto engine with write to ILR
aes->controlr.SM = 1;
aes->controlr.ARS = 1;
return 0;
}
/*! \fn void des_chip_init (void)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief initialize DES hardware
*/
void des_chip_init (void)
{
volatile struct des_t *des = (struct des_t *) DES_3DES_START;
// start crypto engine with write to ILR
des->controlr.SM = 1;
des->controlr.ARS = 1;
}
/*! \fn void chip_version (void)
* \ingroup IFX_DES_FUNCTIONS
* \brief To find the version of the chip by looking at the chip ID
* \param ifx_danube_pre_1_4 (sets to 1 if Chip is Danube less than v1.4)
*/
#define IFX_MPS (KSEG1 | 0x1F107000)
#define IFX_MPS_CHIPID ((volatile u32*)(IFX_MPS + 0x0344))
void chip_version(void)
{
/* DANUBE PRE 1.4 SOFTWARE FIX */
int chip_id = 0;
chip_id = *IFX_MPS_CHIPID;
chip_id >>= 28;
if (chip_id >= 4) {
ifx_danube_pre_1_4 = 0;
printk("Danube Chip ver. 1.4 detected. \n");
}
else {
ifx_danube_pre_1_4 = 1;
printk("Danube Chip ver. 1.3 or below detected. \n");
}
return;
}
|
